Open-source alternatives to Claude
Looking to replace Claude with something free and open-source? These 7 tools are the best open alternatives in 2026 — most are self-hostable, so you keep full control of your data and pay no subscription.
At a glance: how they compare
Click a column to sort — the best one depends on what matters to you.
| Alternative | Stars | Language | License | Last commit | In one line |
|---|---|---|---|---|---|
| openclaw | — | — | — | — | Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞 |
| CowAgent | — | — | MIT | — | Open-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-model, multi-channel. Lightweight, extensible, one-line install. (formerly chatgpt-on-wechat) |
| nullclaw | — | — | MIT | — | Fastest, smallest, and fully autonomous AI assistant infrastructure written in Zig |
| openagent | — | — | Apache-2.0 | — | ⚡️next-generation personal AI assistant powered by LLM, RAG and agent loops, supporting computer-use, browser-use and coding agent, demo: https://demo.openagentai.org |
| py-xiaozhi | — | — | MIT | — | Open-source AI assistant ecosystem with MCP integrations, multimodal workflows, IoT support, and cross-platform voice interaction. |
| pluely | — | — | GPL-3.0 | — | The Open Source Alternative to Cluely - A lightning-fast, privacy-first AI assistant that works seamlessly during meetings, interviews, and conversations without anyone knowing. Built with Tauri for native performance, just 10MB. Completely undetectable in vid |
| openakita | — | — | AGPL-3.0 | — | An open-source AI assistant framework with skills and agent architecture |
Which one should you pick?
openclaw
Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞 Because it is self-hostable, your data can stay entirely on your own infrastructure.
CowAgent
Open-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-model, multi-channel. Lightweight, extensible, one-line install. (formerly chatgpt-on-wechat) Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
nullclaw
Fastest, smallest, and fully autonomous AI assistant infrastructure written in Zig Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
openagent
⚡️next-generation personal AI assistant powered by LLM, RAG and agent loops, supporting computer-use, browser-use and coding agent, demo: https://demo.openagentai.org Its Apache-2.0 license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
py-xiaozhi
Open-source AI assistant ecosystem with MCP integrations, multimodal workflows, IoT support, and cross-platform voice interaction. Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
pluely
The Open Source Alternative to Cluely - A lightning-fast, privacy-first AI assistant that works seamlessly during meetings, interviews, and conversations without anyone knowing. Built with Tauri for native performance, just 10MB. Completely undetectable in vid Its GPL-3.0 license keeps the project and its forks open-source forever, and commercial use is allowed. Because it is self-hostable, your data can stay entirely on your own infrastructure.
openakita
An open-source AI assistant framework with skills and agent architecture Its AGPL-3.0 license keeps the project and its forks open-source forever, and commercial use is allowed. Because it is self-hostable, your data can stay entirely on your own infrastructure.
Switching from Claude without the drama
- Export your data from Claude first — most tools above can import standard formats.
- Run your top pick in parallel for a week or two before committing; self-hosted options can be tried locally in minutes.
- Migrate one team or one project at a time, keeping the old account read-only until everything checks out.
FAQ
What is the best open-source alternative to Claude?
The top open-source alternative is openclaw — Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞. The full ranked list is above.
Are these Claude alternatives free?
Yes. Every tool listed is open-source and free to use; most can be self-hosted so you keep full control of your data.
Can I self-host an alternative to Claude?
Most of these tools are designed to run on your own server or machine, giving you privacy and no subscription fees.
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